M28256 Datasheet, PDF (11/21 Pages) STMicroelectronics – 256 Kbit 32Kb x8 Parallel EEPROM with Software Data Protection

M28256
Table 13. Write Mode AC Characteristics
(TA = 0 to 70°C or –40 to 85°C; VCC = 2.7V to 3.6V)
Symbol
Alt
Parameter
Test Condition
t_AVWL
t_AS
Address Valid to Write Enable Low
t_AVEL
t_AS
Address Valid to Chip Enable Low
tELWL
tCES
Chip Enable Low to Write Enable Low
t_GHWL
t_OES
Output Enable High to Write Enable
Low
t_GHEL
t_OES
Output Enable High to Chip Enable Low
t_WLEL
t_WES
Write Enable Low to Chip Enable Low
t_WLAX
t_AH
Write Enable Low to Address Transition
t_ELAX
t_AH
Chip Enable Low to Address Transition
t_WLDV
t_DV
Write Enable Low to Input Valid
t_ELDV
t_DV
Chip Enable Low to Input Valid
tELEH
tWP
Chip Enable Low to Chip Enable High
t_WHEH
t_CEH
Write Enable High to Chip Enable High
t_WHGL
t_OEH
Write Enable High to Output Enable
Low
t_EHGL
t_OEH
Chip Enable High to Output Enable Low
t_EHWH
t_WEH
Chip Enable High to Write Enable High
t_WHDX
t_DH
Write Enable High to Input Transition
t_EHDX
t_DH
Chip Enable High to Input Transition
t_WHWL
t_WPH
Write Enable High to Write Enable Low
t_WLWH
t_WP
Write Enable Low to Write Enable High
t_WHWH
t_BLC
Byte Load Repeat Cycle Time
t_WHRH
t_WC
Write Cycle Time
t_EL, t_WL
E or W Input Filter Pulse Width
tDVWH
tDS
Data Valid before Write Enable High
t_DVEH
t_DS
Data Valid before Chip Enable High
Note: 1. Characterized only but not tested in production.
E = V_IL, G = V_IH
G = V_IH, W = V_IL
G = VIH
E = V_IL
W = V_IL
G = V_IH
E = V_IL, G = V_IH
G = V_IH, W = V_IL
Note 1
M28256-W
Unit
Min Max
0
ns
0
ns
0
ns
0
ns
0
ns
0
ns
70
ns
70
ns
1
µs
1
µs
100
ns
0
ns
0
ns
0
ns
0
ns
0
ns
0
ns
100
ns
100
ns
0.2
150
µs
5
ms
10
ns
50
ns
50
ns
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